e-Article
Dental unit water content and antibiotic resistance of Pseudomonas aeruginosa and Pseudomonas species: a case study.
Document Type
Article
Author
Source
Subject
*DRUG resistance in bacteria
*CEFTAZIDIME
*COLISTIN
*PSEUDOMONAS aeruginosa
*WATER disinfection
*AQUATIC sports safety measures
*DENTAL clinics
*
*
*
*
*
*
Language
ISSN
2000-2297
Abstract
Many studies consider the contamination of dental unit waterlines (DUWLs), but few of them have studied the possible presence of antibiotic resistant Pseudomonas aeruginosa in the DUWLs. Investigation of the presence of P. aeruginosa and Pseudomonas spp. strains in DUWLs and evaluation of their resistance to six antibiotics (ceftazidime, netilmicin, piperacillin/tazobactam, meropenem, levofloxacin, colistin sulfate) at a public dental clinic in Milan, Italy. Dental units were contaminated by P. aeruginosa with loads of 2–1,000 CFU/L and were mainly located on the mezzanine floor, with a range of 46–54%, while Pseudomonas spp. were primarily found on the first and second floors, ranging from 50 to 91%. P. aeruginosa was antibiotic resistant in 30% of the strains tested, andPseudomonas spp. in 31.8%. Cold water from controls was also contaminated by these microorganisms. Monitoring antibiotic resistance in the water and adopting disinfection procedures on DUs are suggested within the Water Safety Plan. [ABSTRACT FROM AUTHOR]